Add `fsid` to linux exports for NFS. [GH-736]

CHANGELOG.md

@@ -20,6 +20,7 @@
   - Fix issue where Vagrant would sometimes "lose" a VM if an exception
     occurred. [GH-725]
   - `vagrant destroy` destroys virtual machines in reverse order. [GH-739]
+  - Add an `fsid` option to Linux NFS exports. [GH-736]
 
 ## 0.9.7 (February 9, 2012)
 

lib/vagrant/action/vm/nfs.rb

@@ -1,3 +1,4 @@
+require 'digest/md5'
 require 'fileutils'
 require 'pathname'
 
@@ -93,6 +94,12 @@ module Vagrant
             opts[:map_gid] = prepare_permission(:gid, opts)
             opts[:nfs_version] ||= 3
 
+            # The poor man's UUID. An MD5 hash here is sufficient since
+            # we need a 32 character "uuid" to represent the filesystem
+            # of an export. Hashing the host path is safe because two of
+            # the same host path will hash to the same fsid.
+            opts[:uuid]    = Digest::MD5.hexdigest(opts[:hostpath])
+
             acc[key] = opts
             acc
           end

templates/nfs/exports_linux.erb

@@ -1,5 +1,5 @@
 # VAGRANT-BEGIN: <%= uuid %>
 <% folders.each do |name, opts| %>
-"<%= opts[:hostpath] %>" <%= ip %>(rw,no_subtree_check,all_squash<% if opts[:map_uid] %>,anonuid=<%= opts[:map_uid] %><% end %><% if opts[:map_gid] %>,anongid=<%= opts[:map_gid] %><% end %>)
+"<%= opts[:hostpath] %>" <%= ip %>(rw,no_subtree_check,all_squash<% if opts[:map_uid] %>,anonuid=<%= opts[:map_uid] %><% end %><% if opts[:map_gid] %>,anongid=<%= opts[:map_gid] %><% end %>,fsid=<%= opts[:uuid] %>)
 <% end %>
 # VAGRANT-END: <%= uuid %>

vagrant.gemspec

@@ -17,11 +17,11 @@ Gem::Specification.new do |s|
   s.add_dependency "archive-tar-minitar", "= 0.5.2"
   s.add_dependency "childprocess", "~> 0.3.1"
   s.add_dependency "erubis", "~> 2.7.0"
+  s.add_dependency "i18n", "~> 0.6.0"
   s.add_dependency "json", "~> 1.5.1"
   s.add_dependency "log4r", "~> 1.1.9"
   s.add_dependency "net-ssh", "~> 2.2.2"
   s.add_dependency "net-scp", "~> 1.0.4"
-  s.add_dependency "i18n", "~> 0.6.0"
 
   s.add_development_dependency "rake"
   s.add_development_dependency "contest", ">= 0.1.2"